Now I have no problem with the way the new houses are but just nitpicking a feature I think would be nice. I like the Hjerim stonework style house, also maybe the Riften style wood house. What I'm saying is I think it would be nice to make a stone house or mostly wood. I think stone would work with the snow and cold with Heljarchen Hall then wood wood be nice for Lakeview. Also there are more trees in falkreath which makes sense for that option and more rock in the Pale. Maybe an option for this at the beginning while selecting the plans you get the option stone or wood. This would mean you have to get more stone for one and more wood for the other.
I know this probably won't happen but that is just my idea.